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  1. No Access

    Article

    Coincident chromosomal disomy in meiotic dyads from triploid yeast

    Among meiotic asci produced by triploid (3N) Saccharomyces cerevisiae are cases in which exactly two of the four ascospores proliferate into colonies. Given the unique asymmetry problems inherent in distributing ...

    Douglas A. Campbell, Mark M. Doolittle in Current Genetics (1987)

  2. No Access

    Article

    Nutrient salts and the toxicity of black-layer induced by cyanobacteria and Desulfovibrio desulfuricans to Agrostis palustris

    Cyanobacteria and Desulfovibrio desulfuricans can interact to form a subsurface black-layer in high-sand content golf greens that impairs internal water drainage and results in the decline of the Agrostis palu...

    Clinton F. Hodges, Douglas a. Campbell in Plant and Soil (1997)

  3. No Access

    Article

    Gaseous hydrocarbons associated with black layer induced by the interaction of cyanobacteria and Desulfovibrio desulfuricans†

    Black layer is a condition of high-sand-content golf greens that results in a subsurface blackened layer in the sand produced by sulfate-reducing bacteria. Black layer can be the product of an interaction of c...

    Clinton F. Hodges, Douglas A. Campbell in Plant and Soil (1998)

  4. No Access

    Article

    Endogenous Ethane and Ethylene Of Poa pratensis Leaf Blades and Leaf Chlorosis in Response to Biologically Active Products of Bipolaris sorokiniana

    Infection of Poa pratensis leaf blades and callus tissue by Bipolaris sorokiniana increases the production of ethylene and ethane. The ethylene is responsible for most of the chlorosis that occurs during patho...

    Clinton F. Hodges, Douglas A. Campbell in European Journal of Plant Pathology (1999)

  5. No Access

    Article

    Anomalous 17O compositions in massive sulphate deposits on the Earth

    The variation of δ18O that results from nearly all physical, biological and chemical processes on the Earth is approximately twice as large as the variation of δ17O. This so-called ‘mass-dependent’ fractionation ...

    Huiming Bao, Mark H. Thiemens, James Farquhar, Douglas A. Campbell… in Nature (2000)

  6. No Access

    Article

    Origins of sulphate in Antarctic dry-valley soils as deduced from anomalous 17O compositions

    The dry valleys of Antarctica are some of the oldest terrestrial surfaces on the Earth. Despite much study of soil weathering and development, ecosystem dynamics and the occurrence of life in these extreme env...

    Huiming Bao, Douglas A. Campbell, James G. Bockheim, Mark H. Thiemens in Nature (2000)

  7. No Access

    Article

    Seasonal changes in temperature and light drive acclimation of photosynthetic physiology and macromolecular content in Lobaria pulmonaria

    Lobaria pulmonaria (L.) Hoffm. is an epiphytic lichen common to temperate deciduous forests where it copes with large changes in temperature and light levels through repeated annual cycl...

    Tyler D. MacKenzie, Tara M. MacDonald, Luc A. Dubois, Douglas A. Campbell in Planta (2001)

  8. No Access

    Article

    Chlorosis during nitrogen starvation is altered by carbon dioxide and temperature status and is mediated by the ClpP1 protease in Synechococcus elongatus

    The interactive effects of inorganic carbon status, temperature and light on chlorosis induced by nitrogen deficiency, and the roles of Clp proteases in this process were investigated. In wild-type cultures gr...

    Kara Barker-Åström, Jenny Schelin, Petter Gustafsson… in Archives of Microbiology (2005)

  9. No Access

    Article

    Large reallocations of carbon, nitrogen, and photosynthetic reductant among phycobilisomes, photosystems, and Rubisco during light acclimation in Synechococcus elongatus strain PCC7942 are constrained in cells under low environmental inorganic carbon

    Synechococcus elongatus strain PCC7942 cells were grown in high or low environmental concentrations of inorganic C (high-Ci, low-Ci) and subjected to a light shift from 50 µmol m−2 s−1 to 500 µmol m−2 s−1. We qua...

    Tyler D.B. MacKenzie, Jeanette M. Johnson, Amanda M. Cockshutt… in Archives of Microbiology (2005)

  10. No Access

    Article

    Ultraviolet-B effects on photosystem II efficiency of natural phytoplankton communities from Antarctica

    The impact of UVB on the Antarctic phytoplankton photosystem II repair cycle, involving the rapidly cycled D1 protein, was studied during summer 2002. On sunny and overcast days, phytoplankton (from 1-m depth)...

    Josée Nina Bouchard, Suzanne Roy, Gustavo Ferreyra, Douglas A. Campbell… in Polar Biology (2005)

  11. No Access

    Article

    Dynamics of Fluxes Through Photosynthetic Complexes in Response to Changing Light and Inorganic Carbon Acclimation in Synechococcus elongatus

    Cyanobacteria acclimate to environmental inorganic carbon (Ci) concentrations through re-organisations of photosynthetic function and the induction of carbon concentrating mechanisms (CCMs), which alter and const...

    Tyler D.B. MacKenzie, Jeanette M. Johnson, Douglas A. Campbell in Photosynthesis Research (2005)

  12. No Access

    Article

    Flux capacities and acclimation costs in Trichodesmium from the Gulf of Mexico

    Phytoplankton function and acclimation are driven by catalytic protein complexes that mediate key physiological transformations, including generation of photosynthetic ATP and reductant, and carbon and nitroge...

    Christopher M. Brown, James D. MacKinnon, Amanda M. Cockshutt… in Marine Biology (2008)

  13. No Access

    Article

    Physiological characterization and light response of the CO2-concentrating mechanism in the filamentous cyanobacterium Leptolyngbya sp. CPCC 696

    We studied the interactions of the CO2-concentrating mechanism and variable light in the filamentous cyanobacterium Leptolyngbya sp. CPCC 696 acclimated to low light (15 μmol m−2 s−1 PPFD) and low inorganic carbo...

    Elvin D. de Araujo, Jason Patel, Charlotte de Araujo… in Photosynthesis Research (2011)

  14. No Access

    Article

    Photosystem II protein clearance and FtsH function in the diatom Thalassiosira pseudonana

    All oxygenic photoautotrophs suffer photoinactivation of their Photosystem II complexes, at a rate driven by the instantaneous light level. To maintain photosynthesis, PsbA subunits are proteolytically removed...

    Douglas A. Campbell, Zakir Hossain, Amanda M. Cockshutt… in Photosynthesis Research (2013)

  15. No Access

    Article

    Increased reliance upon photosystem II repair following acclimation to high-light by coral-dinoflagellate symbioses

    Changing light environments force photoautotroph cells, including coral symbionts, to acclimate to maintain photosynthesis. Photosystem II (PSII) is subjected to photoinactivation at a rate proportional to the...

    Jennifer Jeans, Douglas A. Campbell, Mia O. Hoogenboom in Photosynthesis Research (2013)

  16. No Access

    Article

    Electron transport kinetics in the diazotrophic cyanobacterium Trichodesmium spp. grown across a range of light levels

    The diazotrophic cyanobacterium Trichodesmium is a major contributor to marine nitrogen fixation. We analyzed how light acclimation influences the photophysiological performance of Trichodesmium IMS101 during exp...

    **aoni Cai, Kunshan Gao, Feixue Fu, Douglas A. Campbell… in Photosynthesis Research (2015)

  17. No Access

    Article

    Changes in the Rubisco to photosystem ratio dominates photoacclimation across phytoplankton taxa

    When growth irradiance changes, phytoplankton acclimates by changing allocations to cellular components to re-balance their capacity to absorb photons versus their capacity to use the electrons from the oxidat...

    Jennifer Marie-Rose Vandenhecke, Jake Bastedo… in Photosynthesis Research (2015)

  18. No Access

    Article

    Photosystem II repair in marine diatoms with contrasting photophysiologies

    Skeletonema costatum and Phaeodactylum tricornutum are model marine diatoms with differing strategies for non-photochemical dissipation of excess excitation energy within photosystem II (...

    Johann Lavaud, Christophe Six, Douglas A. Campbell in Photosynthesis Research (2016)

  19. No Access

    Article

    Under high light stress two Indo-Pacific coral species display differential photodamage and photorepair dynamics

    The in hospite Symbiodinium symbiont of corals on shallow reefs relies on photoprotection and photorepair during periods of exposure to short-term high light and/or temperature stress. A coral’s susceptibility to...

    Verena Schrameyer, Wiebke Krämer, Ross Hill, Jennifer Jeans… in Marine Biology (2016)

  20. Article

    Open Access

    Interactive effects of nitrogen and light on growth rates and RUBISCO content of small and large centric diatoms

    Among marine phytoplankton groups, diatoms span the widest range of cell size, with resulting effects upon their nitrogen uptake, photosynthesis and growth responses to light. We grew two strains of marine cen...

    Gang Li, Douglas A. Campbell in Photosynthesis Research (2017)

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